Ricoh DD 4450 - Machine Sensors and Functions

Overview
C279 1-8 SM
No. Component Function
55 2nd Feed Timing Sensor
Determines the paper misfeed check timing at the
paper registration area.
58 Feed Start Timing Sensor Determines the paper feed start timing.
60 Table Lower Sensor
Detects when the paper table is at its lower limit
position.
63
Master Eject Position (Drum
HP) Sensor
Detects when the drum is at the master eject
position.
64 Paper Exit Timing Sensor Determines the paper exit misfeed check timing.
65 Clamper Closed Sensor Detects if the clamper is in the closed position.
66 Clamper Open Sensor Detects if the clamper is in the open position.
71 Duct plate HP sensor
Detects when the duct plate is at the home
position.
73 Cutter HP Sensor Detects when the cutter is at the home position.
76 Master Set Cover Sensor Checks if the master set cover is properly set.
77 Master End Sensor
Detects when the master making unit runs out of
master roll.
80 Duct jam sensor Detects when a master remains in the duct.
82 Thermal head HP sensor
Detects when the thermal head is at the home
position.
85 Master edge sensor Detects the leading edge of the master.
94 Ink idling roller HP sensor Detects when the idling roller is at home position.